CA2736714A1 - Load carrier - Google Patents
Load carrier Download PDFInfo
- Publication number
- CA2736714A1 CA2736714A1 CA2736714A CA2736714A CA2736714A1 CA 2736714 A1 CA2736714 A1 CA 2736714A1 CA 2736714 A CA2736714 A CA 2736714A CA 2736714 A CA2736714 A CA 2736714A CA 2736714 A1 CA2736714 A1 CA 2736714A1
- Authority
- CA
- Canada
- Prior art keywords
- openings
- ribs
- another
- load carrier
- reinforcement strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
- B65D1/42—Reinforcing or strengthening parts or members
- B65D1/48—Reinforcements of dissimilar materials, e.g. metal frames in plastic walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
- B29C2045/0049—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity the injected material flowing against a mould cavity protruding part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00119—Materials for the construction of the reinforcements
- B65D2519/00129—Metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00432—Non-integral, e.g. inserts
- B65D2519/00442—Non-integral, e.g. inserts on the base surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S108/00—Horizontally supported planar surfaces
- Y10S108/901—Synthetic plastic industrial platform, e.g. pallet
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Pallets (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
The invention relates to a load carrier, particularly a tray (1) for the transport and storage of goods, having a base (2) comprising a receiving surface (4) for the goods to be transported, and a base bottom having a structure (5) made from ribs (6, 7) crossing each other and projecting vertically from the base surface, characterized in that aligned openings (9) are made from one base side to the other in adjacent ribs (7) arranged parallel to each other, into said openings a reinforcement bar (11) can be inserted from one side of the base to the opposite side, wherein the openings (9) in the ribs (7) are formed by means of cut-outs (8) made in the vertical ribs (7) through the receiving surface (4).
Description
Load carrier The invention relates to a load carrier, particularly a tray, for transport and storage of goods, which has a bottom with an accommodation surface for the goods to be transported, and a bottom underside having a structure composed of intersecting ribs that project vertically away from the bottom surface.
Although the present invention can also be used for transport containers, pallets, and large load carriers, it will be explained, in the following, using a tray. Such trays are load carriers having a flat construction, and generally a not very high edge. They have an accommodation surface for the goods to be transported, and generally stand on their bottom surface.
For reinforcement and stiffening of the trays (or also of the container bottoms), these are provided with a rib structure on the bottom underside. This structure can consist of ribs that project vertically downward from the bottom underside and run at right angles to one another, whereby in the present case, the orientation of the ribs is parallel to the side edges of the tray.
Although the present invention can also be used for transport containers, pallets, and large load carriers, it will be explained, in the following, using a tray. Such trays are load carriers having a flat construction, and generally a not very high edge. They have an accommodation surface for the goods to be transported, and generally stand on their bottom surface.
For reinforcement and stiffening of the trays (or also of the container bottoms), these are provided with a rib structure on the bottom underside. This structure can consist of ribs that project vertically downward from the bottom underside and run at right angles to one another, whereby in the present case, the orientation of the ribs is parallel to the side edges of the tray.
Depending on the goods to be transported, such a rib structure alone is not always sufficient for reinforcement and stiffening of the tray.
For this reason, such trays (but also the containers mentioned above) are reinforced, on the bottom side, with strips, for example made of steel, which are integrated into the bottom.
The invention is based on the task of indicating a load carrier of the type stated initially, in which one or more such reinforcement strips can be introduced only if needed, and the accommodation structures for the reinforcement strips can be implemented in technically simple and uncomplicated manner, during production of the load carrier.
The invention accomplishes this task in that openings that align with one another are introduced into ribs that are disposed parallel to one another and adjacent to one another, from one bottom side to the other, into which openings a reinforcement strip can be pushed from one side of the bottom all the way to the opposite side, whereby the openings in the ribs are formed by recesses introduced into the vertical ribs through the accommodation surface.
For this reason, such trays (but also the containers mentioned above) are reinforced, on the bottom side, with strips, for example made of steel, which are integrated into the bottom.
The invention is based on the task of indicating a load carrier of the type stated initially, in which one or more such reinforcement strips can be introduced only if needed, and the accommodation structures for the reinforcement strips can be implemented in technically simple and uncomplicated manner, during production of the load carrier.
The invention accomplishes this task in that openings that align with one another are introduced into ribs that are disposed parallel to one another and adjacent to one another, from one bottom side to the other, into which openings a reinforcement strip can be pushed from one side of the bottom all the way to the opposite side, whereby the openings in the ribs are formed by recesses introduced into the vertical ribs through the accommodation surface.
The task according to the invention is also accomplished by a method for injection-molding of a load carrier, particularly a tray, which has a bottom having an accommodation surface for the goods to be transported, and a bottom underside having a structure composed of intersecting ribs that project vertically away from the bottom surface, whereby openings that align with one another are introduced into ribs that are disposed parallel to one another and adjacent to one another, from one bottom side to the other, into which openings a reinforcement strip can be pushed from one side of the load carrier to the other, and the process management for production of the openings that align with one another, in the vertical ribs, takes place in that a core of an injection-molding tool half, in each instance, which essentially forms the accommodation surface, plunges from the accommodation surface side into the region of a vertical rib, forming a recess in the bottom and this rib, and, vice versa, a corresponding core, in each instance, of the second injection-molding tool half, which forms the bottom underside, plunges in from the rib side, whereby the cores touch one another laterally.
Therefore, although the accommodation channel for the reinforcement strips runs parallel to the bottom surface, the injection-molding tool does not have to be equipped with a molding tool part that works perpendicular to the mold-closing direction.
Therefore, although the accommodation channel for the reinforcement strips runs parallel to the bottom surface, the injection-molding tool does not have to be equipped with a molding tool part that works perpendicular to the mold-closing direction.
Because of the fact that the cores of the two molding tool halves that come into contact with one another work in the mold-closing direction, the molding tool has a technically simple structure and can produce the openings that align with one another in a single work step with the production of the tray.
The cores, which generally have the shape of a truncated pyramid, work together in such a manner that when the molding tool is closed, two pyramid sides of the core, in each instance, come into contact with the adjacent core, which is directed in the opposite direction, and thereby the one core produces the recess in the bottom and in the corresponding rib, and the core that works in the opposite direction forms the rib structure and the underside of the bottom. Where the two cores that interact with one another come into contact, no plastic material can get in during injection molding, so that the openings that align with one another remain after unmolding.
In the edge-side openings, in other words where the reinforcement strip can be pushed in, on the one hand, and ends after being pushed in, on the other hand, holding elements for the reinforcement strip are provided, according to claim 2.
According to claim 3, these are structured in such a manner that an elastic tongue is formed into an edge-side opening, as a holding element (whereby the elasticity of the plastic material used for the load carrier is utilized). A stop is formed into the opening that lies on the opposite side, which prevents the reinforcement strip from slipping out of the load carrier in this direction.
Alternatively, a second elastic tongue can also be provided here.
According to claim 5, the tongue is directed downward at a slant and in the insertion direction of the reinforcement strip. Thus, the elastic tongue is bent upward when the reinforcement strip is pushed in, until the reinforcement strip has been completely introduced, so that the elastic tongue can spring back into its relaxed position behind the end of the reinforcement strip.
In the following, the invention will be shown and explained in greater detail, using drawings.
These show:
Fig. 1 corner region of a tray, seen from the accommodation surface side (without reinforcement strip) Fig. 2 tray according to Figure 1 with reinforcement strip introduced Fig. 3 tray according to Figure 1 in cross-section (without reinforcement strip) Fig. 4 tray according to Figure 3 (with inserted reinforcement strip) In Figures 1 to 4, an injection-molded plastic tray is shown in perspective, in a partial representation, and provided, in general, with the reference symbol 1. It consists essentially of a bottom 2 and a circumferential frame 3, which has an accommodation surface 4 for goods to be transported. On the side of the bottom 2 that lies opposite the accommodation surface 4, the bottom 2 is reinforced by means of a rib structure 5.
The rib structure 5 consists of ribs that intersect at a right angle and are directed vertically away from the bottom underside.
As is particularly evident from Figure 3, the ribs 6 and 7 run parallel to the side edges of the tray 1.
As is clearly evident from Figures 1 and 2, recesses 8 are formed into the accommodation surface 4 of the bottom 2, which recesses continue conically all the way into a rib 7 that lies underneath them. These recesses 8 are disposed on a straight line from one bottom edge to the other.
As is evident from Figure 3, the recesses 8 form openings 9 that align with one another, whereby an opening 9' is also provided in the edge rib 7 that forms a lateral apron 10.
As is evident from Figures 2 and 4, a reinforcement strip (for example made of metal) is pushed through the opening 9' into the openings 9 that align with one another, from the side.
In order for the reinforcement strip 11 not to slip out of the tray 1, a stop is provided in an edge-side opening 9 (not shown), and an elastic tongue 12 is provided in the region of the insertion opening. When the reinforcement strip 11 is pushed through 9', the tongue 12 is bent upward, until the reinforcement strip 11 has been completely introduced. The back end of the reinforcement strip 11 is then situated behind the tongue 12, so that the latter can swing back into its starting position.
For the production of such a tray 1, a molding tool is used that consists essentially of two tool halves. The one tool half molds the accommodation surface 4, while the other tool half molds the ribs structure 5. To form the recesses 8, a core of the mold half that forms the accommodation surface plunges between the cores of the other mold half that form the rib structure, whereby two sides of the cores that correspond to one another touch, in each instance, so that during injection-molding, no plastic material can get in here. After unmolding, recesses 8 having the openings 9 remain at the location where the cores touched.
The cores, which generally have the shape of a truncated pyramid, work together in such a manner that when the molding tool is closed, two pyramid sides of the core, in each instance, come into contact with the adjacent core, which is directed in the opposite direction, and thereby the one core produces the recess in the bottom and in the corresponding rib, and the core that works in the opposite direction forms the rib structure and the underside of the bottom. Where the two cores that interact with one another come into contact, no plastic material can get in during injection molding, so that the openings that align with one another remain after unmolding.
In the edge-side openings, in other words where the reinforcement strip can be pushed in, on the one hand, and ends after being pushed in, on the other hand, holding elements for the reinforcement strip are provided, according to claim 2.
According to claim 3, these are structured in such a manner that an elastic tongue is formed into an edge-side opening, as a holding element (whereby the elasticity of the plastic material used for the load carrier is utilized). A stop is formed into the opening that lies on the opposite side, which prevents the reinforcement strip from slipping out of the load carrier in this direction.
Alternatively, a second elastic tongue can also be provided here.
According to claim 5, the tongue is directed downward at a slant and in the insertion direction of the reinforcement strip. Thus, the elastic tongue is bent upward when the reinforcement strip is pushed in, until the reinforcement strip has been completely introduced, so that the elastic tongue can spring back into its relaxed position behind the end of the reinforcement strip.
In the following, the invention will be shown and explained in greater detail, using drawings.
These show:
Fig. 1 corner region of a tray, seen from the accommodation surface side (without reinforcement strip) Fig. 2 tray according to Figure 1 with reinforcement strip introduced Fig. 3 tray according to Figure 1 in cross-section (without reinforcement strip) Fig. 4 tray according to Figure 3 (with inserted reinforcement strip) In Figures 1 to 4, an injection-molded plastic tray is shown in perspective, in a partial representation, and provided, in general, with the reference symbol 1. It consists essentially of a bottom 2 and a circumferential frame 3, which has an accommodation surface 4 for goods to be transported. On the side of the bottom 2 that lies opposite the accommodation surface 4, the bottom 2 is reinforced by means of a rib structure 5.
The rib structure 5 consists of ribs that intersect at a right angle and are directed vertically away from the bottom underside.
As is particularly evident from Figure 3, the ribs 6 and 7 run parallel to the side edges of the tray 1.
As is clearly evident from Figures 1 and 2, recesses 8 are formed into the accommodation surface 4 of the bottom 2, which recesses continue conically all the way into a rib 7 that lies underneath them. These recesses 8 are disposed on a straight line from one bottom edge to the other.
As is evident from Figure 3, the recesses 8 form openings 9 that align with one another, whereby an opening 9' is also provided in the edge rib 7 that forms a lateral apron 10.
As is evident from Figures 2 and 4, a reinforcement strip (for example made of metal) is pushed through the opening 9' into the openings 9 that align with one another, from the side.
In order for the reinforcement strip 11 not to slip out of the tray 1, a stop is provided in an edge-side opening 9 (not shown), and an elastic tongue 12 is provided in the region of the insertion opening. When the reinforcement strip 11 is pushed through 9', the tongue 12 is bent upward, until the reinforcement strip 11 has been completely introduced. The back end of the reinforcement strip 11 is then situated behind the tongue 12, so that the latter can swing back into its starting position.
For the production of such a tray 1, a molding tool is used that consists essentially of two tool halves. The one tool half molds the accommodation surface 4, while the other tool half molds the ribs structure 5. To form the recesses 8, a core of the mold half that forms the accommodation surface plunges between the cores of the other mold half that form the rib structure, whereby two sides of the cores that correspond to one another touch, in each instance, so that during injection-molding, no plastic material can get in here. After unmolding, recesses 8 having the openings 9 remain at the location where the cores touched.
Claims (6)
1. Load carrier, particularly tray, for transport and storage of goods, which has a bottom with an accommodation surface for the goods to be transported, and a bottom underside having a structure composed of intersecting ribs that project vertically away from the bottom surface, characterized in that openings (9) that align with one another are introduced into ribs (7) that are disposed parallel to one another and adjacent to one another, from one bottom side to the other, into which openings a reinforcement strip (11) can be pushed from one side of the bottom all the way to the opposite side, whereby the openings (9) in the ribs (7) are formed by recesses (8) introduced into the vertical ribs through the accommodation surface.
2. Load carrier according to claim 1, characterized in that the two edge-side openings (9) in the ribs (7) are provided with holding elements (12) for the reinforcement strip (11).
3. Load carrier according to claim 2, characterized in that an elastic tongue (12) is formed into an edge-side opening (9), as a holding element, and the opening (9) that lies on the opposite side has a stop for the reinforcement strip.
4. Load carrier according to claim 2, characterized in that an elastic tongue is formed into each of the two edge-side openings (9).
5. Load carrier according to claim 3 or 4, characterized in that the tongue (12) is directed downward at a slant and in the insertion direction of the reinforcement strip (11).
6. Method for injection-molding of a load carrier, particularly a tray, which has a bottom having an accommodation surface for the goods to be transported, and a bottom underside having a structure composed of intersecting ribs that project vertically away from the bottom surface, whereby openings that align with one another are introduced into ribs that are disposed parallel to one another and adjacent to one another, from one bottom side to the other, into which openings a reinforcement strip can be pushed from one side of the load carrier to the other, characterized in that the openings (9) that align with one another, in the vertical ribs (7), are produced in that a core of an injection-molding tool half, in each instance, which essentially forms the accommodation surface (4), plunges from the accommodation surface side into the region of a vertical rib (7), forming a recess in the bottom and this rib, and, vice versa, a corresponding core, in each instance, of the second injection-molding tool half, which forms the bottom underside (5), plunges in from the rib side, whereby the cores touch one another laterally.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008047351A DE102008047351A1 (en) | 2008-09-15 | 2008-09-15 | charge carrier |
| DE102008047351.0 | 2008-09-15 | ||
| PCT/EP2009/006495 WO2010028793A1 (en) | 2008-09-15 | 2009-09-08 | Load carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2736714A1 true CA2736714A1 (en) | 2010-03-18 |
| CA2736714C CA2736714C (en) | 2014-04-22 |
Family
ID=41258292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2736714A Active CA2736714C (en) | 2008-09-15 | 2009-09-08 | Load carrier |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8991322B2 (en) |
| EP (1) | EP2337744B1 (en) |
| CN (1) | CN102186730B (en) |
| CA (1) | CA2736714C (en) |
| DE (1) | DE102008047351A1 (en) |
| ES (1) | ES2398064T3 (en) |
| MX (1) | MX2011002745A (en) |
| PL (1) | PL2337744T3 (en) |
| WO (1) | WO2010028793A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197345B (en) * | 2015-09-22 | 2017-10-24 | 苏州金柏包装科技发展有限公司 | A kind of composite band muscle expanded polystyrene (EPS) pallet and its manufacture method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1571190A (en) | 1975-12-09 | 1980-07-09 | Wavin Bv | Pallets |
| DE3709190A1 (en) * | 1987-03-20 | 1988-09-29 | Schaefer Gmbh Fritz | Stackable, box-shaped container |
| CN1156386C (en) * | 2001-01-09 | 2004-07-07 | 陈建希 | New packing box of full plastic, plastic-steel, plastic-aluminum and other metal and non-metal material |
| DE102007050061B4 (en) * | 2007-06-20 | 2009-12-24 | Georg Utz Holding Ag | tray |
| DE202007011701U1 (en) * | 2007-08-21 | 2007-12-20 | Georg Utz Holding Ag | storage containers |
| DE202007014965U1 (en) * | 2007-10-25 | 2008-02-28 | Paul Craemer Gmbh | Large load carrier with anti-slip plates |
-
2008
- 2008-09-15 DE DE102008047351A patent/DE102008047351A1/en not_active Ceased
-
2009
- 2009-09-08 PL PL09778384T patent/PL2337744T3/en unknown
- 2009-09-08 EP EP09778384A patent/EP2337744B1/en active Active
- 2009-09-08 WO PCT/EP2009/006495 patent/WO2010028793A1/en active Application Filing
- 2009-09-08 MX MX2011002745A patent/MX2011002745A/en active IP Right Grant
- 2009-09-08 CA CA2736714A patent/CA2736714C/en active Active
- 2009-09-08 ES ES09778384T patent/ES2398064T3/en active Active
- 2009-09-08 US US12/998,057 patent/US8991322B2/en active Active
- 2009-09-08 CN CN200980141127.2A patent/CN102186730B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2337744B1 (en) | 2012-10-31 |
| DE102008047351A1 (en) | 2010-03-25 |
| CN102186730A (en) | 2011-09-14 |
| ES2398064T3 (en) | 2013-03-13 |
| US8991322B2 (en) | 2015-03-31 |
| EP2337744A1 (en) | 2011-06-29 |
| MX2011002745A (en) | 2011-04-07 |
| US20110163055A1 (en) | 2011-07-07 |
| WO2010028793A1 (en) | 2010-03-18 |
| PL2337744T3 (en) | 2013-03-29 |
| CA2736714C (en) | 2014-04-22 |
| CN102186730B (en) | 2014-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |